11 And our adversaries said, "They will neither know nor see anything, till we come into their midst and kill them and cause the work to cease." 12 So it was, when the Jews who dwelt near them came, that they told us ten times, "From whatever place you turn, they will be upon us." 13 Therefore I positioned men behind the lower parts of the wall, at the openings; and I set the people according to their families, with their swords, their spears, and their bows. 14 And I looked, and arose and said to the nobles, to the leaders, and to the rest of the people, "Do not be afraid of them. Remember the Lord, great and awesome, and fight for your brethren, your sons, your daughters, your wives, and your houses." 15 And it happened, when our enemies heard that it was known to us, and that God had brought their plot to nothing, that all of us returned to the wall, everyone to his work.

16 So it was, from that time on, that half of my servants worked at construction, while the other half held the spears, the shields, the bows, and wore armor; and the leaders were behind all the house of Judah. 17 Those who built on the wall, and those who carried burdens, loaded themselves so that with one hand they worked at construction, and with the other held a weapon. 18 Every one of the builders had his sword girded at his side as he built. And the one who sounded the trumpet was beside me.

Matthew Henry's Commentary on Nehemiah 4:11-18

Commentary on Nehemiah 4:7-15

(Read Nehemiah 4:7-15)

The hindering good work is what bad men aim at, and promise themselves success in; but good work is God's work, and it shall prosper. God has many ways of bringing to light, and so of bringing to nought, the devices and designs of his church's enemies. If our enemies cannot frighten us from duty, or deceive us into sin, they cannot hurt us. Nehemiah put himself and his cause under the Divine protection. It was the way of this good man, and should be our way. All his cares, all his griefs, all his fears, he spread before God. Before he used any means, he made his prayer to God. Having prayed, he set a watch against the enemy. If we think to secure ourselves by prayer, without watchfulness, we are slothful, and tempt God; if by watchfulness, without prayer, we are proud, and slight God: either way, we forfeit his protection. God's care of our safety, should engage and encourage us to go on with vigour in our duty. As soon as a danger is over, let us return to our work, and trust God another time.

Commentary on Nehemiah 4:16-23

(Read Nehemiah 4:16-23)

We must watch always against spiritual enemies, and not expect that our warfare will be over till our work is ended. The word of God is the sword of the Spirit, which we ought to have always at hand, and never to have to seek for it, either in our labours, or in our conflicts, as Christians. Every true Christian is both a labourer and a soldier, working with one hand, and fighting with the other. Good work is likely to go on with success, when those who labour in it, make a business of it. And Satan fears to assault the watchful Christian; or, if attacked, the Lord fights for him. Thus must we wait to the close of life, never putting off our armour till our work and warfare are ended; then we shall be welcomed to the rest and joy of our Lord.